1. Division A of Babbage Group had investments at the year end of $56 million. These include the cost of a new equipment item costing $3 million that was acquired two weeks before the end of the year. This equipment was paid for by the central treasury department of Babbage, and is recorded in the accounts as an inter-company loan.

The profit of division A for the year was $7 million before deducting head office recharges of $800,000.

Required: What is the most appropriate measure of ROI for Division A for the year?